Popularity of Unix/Linux
- Why is Unix/Linux Popular?
✔️ Users direct inter-processor communication of devices making it very efficient and easy to
integrate, also it provides stability, reliability, and better security.
- Unix/Linux systems are designed to efficiently manage multi-user and multi-tasking environments
while offering robust security features.
Foundational Figures
- The Father of Linux:
✔️ Linus Torvalds.
- Linus Torvalds initiated the Linux kernel project in 1991.
User Administration
- Command to Create a New User:
✔️ `sudo useradd username`
- This command allows an administrator to create a new user account on the server.
- Protection for the Root User:
✔️ False.
- Unix does not inherently protect the root user from executing harmful commands, thus caution is
always required.
Historical Context
- Charles Babbage:
✔️ Father of Computing.
- He conceptualized and designed the analytical engine, a precursor to modern computers.
, - Creation of UNIX:
✔️ 1969.
- Developed by Ken Thompson, Dennis Ritchie, and others at Bell Labs.
- Unix's Major Problem Over Time:
✔️ It was too expensive.
- The commercial nature of early UNIX systems led to high costs, limiting accessibility.
- Result of UNIX's Problem:
✔️ The creation of LINUX
- Linux was developed as a free and open-source alternative to the costly UNIX systems.
Companies Using Unix/Linux
- Companies That Use UNIX/Linux:
✔️ Usually will be all the above answer cause everyone uses it.
- Many organizations across various industries utilize Unix/Linux for its stability and scalability.
Shells in UNIX
- Examples of Shells:
✔️ All of the Above (C shell, Bourne Shell, Bash Shell).
- Various shell environments provide different features and scripting capabilities in Unix.
- True Statement about Unix Shell:
✔️ True.
- The shell serves as the interface between the user and the system's kernel.
File Structure & Initialization
- Highest Level in the UNIX File Structure: